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Simplifying 89 + -3x = 4x + 12 Reorder the terms: 89 + -3x = 12 + 4x Solving 89 + -3x = 12 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 89 + -3x + -4x = 12 + 4x + -4x Combine like terms: -3x + -4x = -7x 89 + -7x = 12 + 4x + -4x Combine like terms: 4x + -4x = 0 89 + -7x = 12 + 0 89 + -7x = 12 Add '-89' to each side of the equation. 89 + -89 + -7x = 12 + -89 Combine like terms: 89 + -89 = 0 0 + -7x = 12 + -89 -7x = 12 + -89 Combine like terms: 12 + -89 = -77 -7x = -77 Divide each side by '-7'. x = 11 Simplifying x = 11
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